Unable to change

—First—

Make sure to zero out any remaining balance on your account.

Contact Customer Support by phone or chat:

• Call Apple Support at 1-800-APLCARE. 📞
• International Support. 🌐
• Contact Apple Support. 📝
• Chat using Messages. 💬

—Then—

Click ▶︎ Change Region. 🌐

hello,

Your iPhone must have a fast Wi-Fi connection

Restart your iPhone First -->Restart your iPhone

and change region again,

if you have any subscription or remaining itune balance , you cannot change region.